1567.06
Examination of mine generating firedamp - posting or report.

No person shall enter a mine generating firedamp, which can be
detected by an approved flame safety lamp, until it has been reported safe by
the person making the fire boss examination as prescribed by section
1563.24 of the Revised Code. This
report shall be posted on a blackboard provided for that purpose at the main
entrance to the mine. This section does not apply to the mine superintendent
and mine foreman.